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CVE-2026-63768

MEDIUM
4.3
CVSS 3.1
Description
cal.diy through 6.2.0 contains an open redirect vulnerability in the conferencing OAuth callback endpoint that allows attackers to redirect users to arbitrary URLs by crafting malicious state parameters. Attackers can exploit the unsigned state parameter and onErrorReturnTo field to silently redirect visitors from the trusted domain to attacker-controlled URLs for phishing attacks.

Metadata

CVE ID
CVE-2026-63768
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-07-18 12:34 UTC
Published
2026-07-20 19:08 UTC
Last updated
2026-07-20 19:28 UTC
Primary CWE
CWE-601
URL Redirection to Untrusted Site ('Open Redirect')
Vendor / Product
calcom / cal.diy
Sources
cve.org  ·  NVD

Severity & Metrics

4.3 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
calcom cal.diy — 0 ≤ 6.2.0
Weakness (CWE)
CWESourceDescription
CWE-601 cna URL Redirection to Untrusted Site ('Open Redirect')
CVSS scores (2)
ScoreSeverityVersionSourceVector
5.3 MEDIUM 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
4.3 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
References (3)
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